Ceramic Coatings in Internal Combustion Engines
An investigation was conducted into material and processes with the goal of achieving effective and durable thermal barriers for heavy-duty diesel engine applications. Coating systems aimed at reduced thermal conductivity, erosion- and corrosion resistance were evaluated. Plasma and flame sprayed yttrium stabilized zirconia oxide layers were judged in these tests after surface treatments with and without bond coating. Selected ceramic coated substrates were tested under engine operating conditions in a practical laboratory test to improve the understanding of how surface porosity, coating layer structure and bond strength contribute to the overall performance of thermal barrier systems.
Experiments have shown that sui table mechanical properties of the surface will improve the resistance against erosion and gas diffusion. Insulating materials may improve the performance and durability of advanced heat engines, provided the combustion system, in particular the injection configuration is properly optimised.
A more detailed understanding of thermal barrier coatings performance has been achieved through this program.
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- 1.G. Desplanches, “A Study of PSC for Use in Internal Combustion Alternative Engines”, pp.193–203 in 1st Plasma-Technik-Symposium, 1988, published by Eschenauer et al editors.Google Scholar
- 2.I. Kevernes, M.P. Johnson and R. Buget, “Performance of Thermal Barrier Coating for Diesel, Stationary and Aircraft Gas Turbine Components”, MRS Europe, pp. 247–264 in Review of preliminary COST 501, 1985.Google Scholar
- 3.I. Kevernes, “A Coating Programme for Diesel Engine Parts”, Proposal in 2nd round of COST 501, Novembre, 1987.Google Scholar
- 4.M. Hauser, S. Lauf, H. Reiter, G. Woschni, N. Zernig C. Klarhoefer, H. KUrkemeier, S. Mielke, W. Sander, B. Engels, R. Lingenauber and J. Siebeln, “Einsatzchancen keramischer Werkstoffe im Motorenbau”, in Proceedings “Haus der Technik”, March, 1987.Google Scholar
- 5.W. Bunk, U. Dworak, W. Hüther, H. Knoch and M. Langer “Keramische Werkstoffe f.r den Einsatz in Kraftfahrzeugen”, Proceedings of the “Technische Akademie Esslingen”, March 1985Google Scholar
- 6.M.K. Eberle and A. Paul, “Possible Ways and Means to Further Develop the Diesel Engine in View of Economy”, CIMAC Publication, #Warsaw, Poland, June, 1987.Google Scholar
- 7.K. Boulouchos, M.K. Eberle, B. Ineichen and C. Klukowski, “New Insights into the Mechanisms of In-Cylinder Heat Transfer in Diesel Engines”, SAE Publication #890573, March, 1989Google Scholar
- 8.J.S. Reed and A.M. Lejus, “Effect of Grinding and Polishing on Near-Surface Phase Transformation in Zirconia”, Mat. Res. Bull. 12, 1977.Google Scholar
- 9.M. Benninghoff, “Werkstoffbearbeitung mit dem Laser — Stand und Entwicklungsperspektiven”, Techn. Rundschau, 81 (6), 1989.Google Scholar